CVE-2025-24970: netty Input Validation Flaw

Description

Netty, an asynchronous, event-driven network application framework, has a vulnerability starting in version 4.1.91.Final and prior to version 4.1.118.Final. When a special crafted packet is received via SslHandler it doesn't correctly handle validation of such a packet in all cases which can lead to a native crash. Version 4.1.118.Final contains a patch. As workaround its possible to either disable the usage of the native SSLEngine or change the code manually.

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-20 Improper Input Validation

Affected Products

Vendor	Product	Versions
netty	netty	4.1.91 — 4.1.118
netapp	active_iq_unified_manager	All
netapp	active_iq_unified_manager	All
netapp	active_iq_unified_manager	All
netapp	oncommand_insight	All

References

Advisories & Patches

https://github.com/netty/netty/commit/87f40725155b2f89adfde68c7732f97c153676c4 https://github.com/netty/netty/security/advisories/GHSA-4g8c-wm8x-jfhw https://github.com/netty/netty/security/advisories/GHSA-4g8c-wm8x-jfhw

Exploits

https://www.vicarius.io/vsociety/posts/cve-2025-24970-netty-vulnerability-detection https://www.vicarius.io/vsociety/posts/cve-2025-24970-netty-vulnerability-mitigation

Other References

https://security.netapp.com/advisory/ntap-20250221-0005/

Frequently Asked Questions

What is CVE-2025-24970? +

Netty, an asynchronous, event-driven network application framework, has a vulnerability starting in version 4.1.91.Final and prior to version 4.1.118.Final. When a special crafted packet is received via SslHandler it doesn't correctly handle validation of such a packet in all cases which can lead to a native crash. Version 4.1.118.Final contains a patch. As workaround its possible to either disable the usage of the native SSLEngine or change the code manually. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2025-24970? +

CVE-2025-24970 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-24970? +

CVE-2025-24970 affects products from netapp, netty, specifically: active_iq_unified_manager, netty, oncommand_insight. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-24970? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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